Half to chaeles t



(No Model.)

T. H. HUMPHREYS.

V SNAP HOOK. No. 380,286. Patented Mar. 27, 1888.

UNIT D STATES PATENT twice.

THOMAS H. HUMPHBEYS, OF BALTIMORE, MARYLAND, ASSIGNOB OF ONE- HALF TO CHARLES T. HOLLOWAY, OF SAME PLACE.

SNAP=HOOK.

SPECIFICATION forming; part of Letters Patent No. 380,286, dated March 27, 1888.

Application filed November 11, 1887. Serial No. 254.899. (No model.)

To aZZ whom, it may concern:

Be it known that LTHOMAS H. HUMPHREYS, of the city of Baltimore, State of Maryland, have invented certain Improvements in Snap- Hooksof which the following isaspecification.

This invention consists in providing an on dinary snap-hook, such as is used on breastchains and traces with a safety device to prevent the ring to which the hook is attached from passing to the extremity of the fixed jaw of the hook and in contactwith the spring-jaw of the same, the object being to provide against the detachment of the hook from the ring in case the springjaw is accidentally depressed or broken.

In the further description of the said invention which follows reference is made to the accompanying drawings, forming a part hereof and in which- Figure I is a partly-sectional side view of the improved snap-hook. Fig. II is an exterior side view of the hook and a ring, illustrating the mannerof attaching the two devices together. Fig. III is an edge view of Fig. 1. Similar letters of reference indicate similar parts in all the views.

A is the stem of the hook, terminating at one end in an eye, a, and at the other in the fixed jaw i).

bent arm pivoted atf to the stem A, the outer end of which is held yieldingly in contact with the fixed jaw b at a point near to its end by means of the spring 51. It will be seen that the bent end of the arm C, when extended, is practically at a right angle with reference to a line parallel with the stem A. Consequently it has no tendency to move in and admit of the admission of the ring to the hook when the said ring is pressed against it.

As the safety-arm O is not self-acting. 1 pro vide it with a thumbpiece, h, which projects laterally beyond the stem A, so as to be accessible, as shown particularly in Fig. III.

The free end of the arm 0 is sustained laterally by means of a projection, i, which is slotted for its reception. (See particularly Figs. I and II.)

D is a ring shown in section in Fig. II, in which it is represented in both full and dotted lines, to illustrate different positions of the various partsintheirattachmentanddetachment.

I claim as my invention- 1. In combination with the stem A and the fixed and movable jaws b and B, the spring arm 0, substantially as specified.

2. In combination with stem A and the fixed and movable jaws b and B, the spring-arm O and the projection i, substantially as specified.

THOMAS H. HUMPHREYS.

Witnesses:

WM. T. HOWARD, DANL. FISHER. 

